Sealing Screws
Hex Socket Cap Head Sealing Screws Integrated O Ring IP67 Waterproof Fasteners For Industrial Cabinets New Energy Equipment
Product Brief Introduction
Cap head sealing screws are high-strength integrated waterproof fasteners combining standard hex socket cap screw structure with fixed rubber O-ring under the head. The exclusive bottom groove locks the sealing ring firmly without falling off during transportation or automatic assembly. After standard torque tightening, the compressed rubber fills assembly gaps completely to block rainwater, sea fog, dust and industrial oil mist, reaching stable IP67 protection without extra gaskets or sealant. Different from pan head styles, the cylindrical cap head provides larger stress area and stronger torque bearing capacity for heavy-duty industrial enclosure assembly.
Unique Structural Advantages
The integrated sealing structure of cap head sealing screws solves frequent leakage problems caused by separate loose washers in mass production. The internal allen hex drive matches all standard socket tools, transmitting even torque without slot cracking under repeated disassembly and maintenance. The thickened cap head surface avoids shell denting on thin metal and plastic housings under locking pressure. We reserve customized groove depth to fit different O-ring thicknesses according to customer shell design requirements.
Multi-Material Matching Solutions
We supply diversified raw material combinations for cap head sealing screws to match diverse working conditions. Zinc-plated carbon steel versions serve cost-sensitive indoor electrical cabinet projects. SUS304 stainless steel options fit general humid electronic workshops, while SUS316 stainless steel resists strong salt fog for coastal new energy devices. Three mainstream O-ring materials including EPDM, silicone and Viton are optional for normal temperature, low temperature and oil-corrosion environments respectively. All raw materials pass RoHS and REACH inspection to meet global factory audit standards.
Wide Industrial Application Scenarios
Cap head sealing screws are widely adopted in high-load sealed equipment assembly. New energy charging pile shells and energy storage control boxes rely on their high torque and permanent waterproof performance to resist outdoor extreme weather. Precision sensor housings and industrial LiDAR modules use mini-size cap sealing screws to keep internal circuits dry. Outdoor power distribution boxes, automation equipment and communication junction boxes also select this series for long-term stable sealing effect. Metric sizes M2-M12 are always in stock for fast delivery.
Stock & Customization Support
Complete metric specifications of cap head sealing screws are ready in warehouse, with 5-15 working days lead time for bulk orders. We accept full customized schemes including adjustable thread length, customized cap height, exclusive O-ring hardness and surface treatments like black oxide, passivation and zinc plating. Laser printing brand logos on screw heads is available for OEM customers. All finished goods go through dimensional inspection, neutral salt spray test and full sealing performance test before shipment, with complete test reports provided upon request.
Fasteneryh Manufacturing Strength
As a professional fastener factory, we produce all cap head sealing screws on full-automatic cold forging and thread rolling lines, equipped with optical sorting machines to eliminate defective products. Our technical team has rich experience in matching sealing solutions for automotive, energy and electronic industries. Small trial orders are supported before mass cooperation, and 24-hour multilingual sales team offers professional technical quotation and drawing confirmation service.
Inquiry Guidance
If you are sourcing high-torque waterproof fasteners for industrial enclosure, energy storage or monitoring equipment projects, send your installation drawings, size lists and working environment requirements to us. Our engineers will tailor matched cap head sealing screw solutions and offer factory-direct competitive prices. Free samples can be arranged immediately for waterproof and anti-corrosion performance testing.